telegraph

telegraph

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• The Paper Radio - In the meantime he flees, flees irrecoverable time (Virgilio) Journey into the past to discover my paper collection dedicated to radio and telegraphy
  [ Hits: 70 | Votes: 2 | Rating: 8.5 ]

• CW Morse Code Keys - 3d Printed Lightweight Morse Code Telegraph Keys & Oscillators For Sale, CW Morse code keys Made In The USA
  [ Hits: 484 | Votes: 2 | Rating: 8 ]
• 9A5N Solid State CW Paddles - 21st Century telegraphy paddles, software defined telegraphy paddles by 9A5N. Following global trends in the application of the latest technology, HAM 9a5n has made a significant technological breakthrough in the field of CW paddles
  [ Hits: 475 | Votes: 1 | Rating: 10 ]

• Zen and the Art of Radiotelegraphy - Free PDF book to start learning morse code and to improve your proficiency, freely available in four languages english, german french and italian.
  [ Hits: 112 | Votes: 0 | Rating: 0 ]

• Invention Story of Radio - History of Radio from the invention of telephone and telegraph, to the invention of radio.
  [ Hits: 213 | Votes: 1 | Rating: 8 ]
• Morse Key History - An overview of the development of the Morse key for sending the Morse Code, from the first camelback keys, through straight keys and sideswiper keys to the semi automatic keyers including the Vibroplex to the modern electronic keyer.
  [ Hits: 196 | Votes: 0 | Rating: 0 ]
• Evolution of Car Radios: From Marconi to Motorola - his historical account traces the development of car radios from Marconi's mobile wireless telegraph station on a steam engine vehicle in 1901 to Motorola's iconic car radio models in the 1930s. It highlights key milestones such as Alfred Grebe's radio-telephone experiments on Long Island and the introduction of Marconi-Phone 8 radios by the Daimler Company in England. The narrative explores technological advancements, including the transition from TRF to Super-Heterodyne circuitry and the integration of push-button controls. The evolution from vacuum tubes to transistors and compact discs is also documented, showcasing the continuous innovation in automotive entertainment systems.
  [ Hits: 51 | Votes: 1 | Rating: 1 ]

• Codes of the World - History of codes of the world, russian codes, visual codes, and al long collection of telegraph codes as used worlwide including the international morse code and the relative variations
  [ Hits: 990 | Votes: 0 | Rating: 0 ]

• CW and Morse Code Telegraphy - The CW Projects and Resources of Mike Maynard, K4ICY. Includes a brief history and overview of Morse Code and many interesting resources on telegraph
  [ Hits: 156 | Votes: 0 | Rating: 0 ]

• HST - highspeedtelegraphy - Highspeed Telegraphy news, history and rankings of HST Championships
  [ Hits: 220 | Votes: 23 | Rating: 9.53 ]

• Recognition of CW signs at different listening levels and frequencies - The recognition of telegraphy masked by noise at 40 and 80 signs/min telegraphy speed was studied in 10 normal-hearing subjects at different sound pressure levels (25-85 dB SPL in steps of 5 dB) as well as at different test frequencies (2000, 1000, 800, 630, 500 and 250 Hz). The ability to recognize the signs varied with varying SPL. Recognition for most of the subjects was best at an SPL close to 70 dB. All subjects improved their recognition as the frequency was lowered to 500 Hz, some even at 250 Hz. These facts should be taken into consideration when training telegraphy operators as well as in the construction of radio receivers to permit listening at low frequencies. Furthermore, the critical ratio was calculated at the different test frequencies.
  [ Hits: 81 | Votes: 1 | Rating: 7 ]

• W1TP Museum of Telegraph - A collection of several morse keys and paddles
  [ Hits: 232 | Votes: 0 | Rating: 0 ]
• Semi Automatic Bug Keys Collection - A collection of morse telegraph and radio items
  [ Hits: 74 | Votes: 0 | Rating: 0 ]

• EhoCW - EhoCw is a freeware morse keyer software and a morse code generator and even a morse code decoder. It runs on your PC under windows (from NT to Vista, windows 7). This software can be used efficiently by any telegraphist, confirmed or beginner who wants to use his personnal computer as a memory keyer, you can use it to learn morse code and you can use it to decode morse code
  [ Hits: 2468 | Votes: 5 | Rating: 6.6 ]

• MorseKOB - MorseKOB is a program for doing landline telegraphy and American Morse with the help of a computer. Can run on Mac OS and Linux, in addition to Windows.
  [ Hits: 212 | Votes: 0 | Rating: 0 ]

• HAM Radio DIY Projects by DL8ABH - Ham Radio DIY projects all around morse semi-automatic and fully automatic bug keys construction manuals o semi-and fully automatic Bug keys, portable light weight magnetic loops, making a telegraph set (school project) and lots of kitchen projects (useful hamradio gear made by easily available material)
  [ Hits: 152 | Votes: 0 | Rating: 0 ]

• Morse Code Oscillator - How to make a Morse Code Oscillator
  [ Hits: 367 | Votes: 1 | Rating: 4 ]

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